JPS6331950Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to an automatic box-making machine for making boxes that fit items such as containers filled with foodstuffs into punched holes and are used as trays for packaging, transporting, and storing said items. It is.

Conventional boxes used for the above-mentioned purposes include a box body consisting of a bottom wall, peripheral walls rising from the four side edges of the bottom wall, a top wall having punched holes into which items are inserted, and a top wall of the top wall. Since it is formed by a peripheral wall that hangs down from the four side edges and a lid body, it is a two-piece piece.

Therefore, it takes time and effort to manage the box body and the lid, and the time-consuming work of fitting the lid to the box body is required.

In addition, since it is formed from two pieces,
The drawback was that a large amount of material was used.

Furthermore, since the edges of the peripheral walls of the box body and the lid are manually connected by insertion or fitting, there is a drawback that it is time-consuming.

This invention allows the box body and lid to be automatically assembled from a single piece of cardboard or other thick paper punched out, saves materials, and eliminates the above-mentioned drawbacks. The purpose is

This idea involves feeding a blank into the molding section,
While assembling the box body and driving it toward the take-out point, during the above-mentioned movement,
First, an automatic box-making machine is provided which covers a box body with a lid by folding down the top wall and folding the peripheral walls, and also adheres the overlapping peripheral walls to each other.

Hereinafter, embodiments of this invention will be described based on the accompanying drawings.

In the figure, A is blank, and this blank A
consists of a bottom wall 1 made of thick paper such as cardboard, side walls 2, 2' extending from both edges of the bottom wall 1, end walls 3, 3' extending from both edges of the bottom wall 1, and both end walls 3, A box body a consisting of a protruding piece 4 connected from both end edges of 3' and adhesively fixed to the inner surface of the end of both side walls 2, 2', and a punching piece 4 connected to one end wall 3' for fitting the item. A top wall 6 provided with a hole 5, outer walls 7, 7' which are connected from both side edges of the top wall 6 and are adhesively fixed to the side walls 2, 2', and which are connected from the top wall 6 and are attached to the end walls. 3 and an outer end wall 8 which is circumscribed and fixed by adhesive.

Since the box assembled from blank A is used as a tray for items that require refrigeration, through holes 9 are provided in the bottom wall 1, side walls 2, 2', and outer walls 7, 7' for cold air to enter. (Side walls 2, 2' and outer wall 7,
In addition, a slit 10 is formed in the top wall 6 so as to protrude upward from a predetermined position on the upper edge of the end wall 3' and the outer end wall 8. The projecting pieces 11 are installed, and the end walls 3, 3'
A notch 12 is provided in the outer end wall 8 into which the upper part of the protruding piece 11 fits, and by fitting the notch 12 and the protruding piece 11, a gap is formed between the top wall 6 and the bottom wall 1 of the stacked trays. This creates a gap for cold air to enter and prevents the load from shifting.

Reference numeral B designates a conveyance path for supplying the stacked blanks A one by one from the lowest position with the side wall 2 and outer wall 7 placed in advance.

The above conveyance path B consists of two chain conveyors 13
The chain conveyor 13 is provided with a hook 14 that is connected to the side wall 2' and the outer wall 7', and a hook 14 is provided on the tail portion of the chain conveyor 13 so that the required number of stacks are stacked. A stopper 15 that supports both sides of the blank A located at the lowest position of the blank A (the side wall 2 and the outer wall 7 located on the front side in the running direction, and the side wall 2' and the outer wall 7' located on the rear side)
and a suction cup 16 which is positioned between the chain conveyor 13 and moves up and down, and when it descends, sucks the lowest blank A and transfers the blank A onto the chain conveyor 13.

In addition, the end wall 3 is directed forward from both outside sides of the conveyance path B.
and the outer end wall 8 are inserted into the chain conveyor 1.
Two guide rails 17 are provided on which the blank A moves from 3 to 3, and a stopper 18 is provided at the end of the guide rail 17 to stop the blank A at a fixed position when the side wall 2 and the outer wall 7 come into contact with each other. There is.

Furthermore, both side walls 2, 2' of the traveling blank A,
An applicator C is provided for applying adhesive to both ends of the end walls 3, 3' or to the projecting piece 4.

In the case shown in the figure, the above coating device C is located directly above the chain conveyor 13 to coat both ends of both side walls 2, 2', but it is not possible to coat both end walls 3, 3' or the protruding piece 4. You can.

The coating device C is made up of a molten storage tank for adhesive such as hot melt, a nozzle with an electromagnetic valve provided immediately above both ends of the side walls 2, 2', a hose connecting the storage tank and the electromagnetic valve, and a pressure-feed pump for the adhesive incorporated in the storage tank. A limit switch or a photocell (not shown) is activated by the blank A while it is traveling, causing the adhesive to be sprayed from the nozzle.

D is a molding device that molds the box body a of the blank A on the guide rail 17.

The above-mentioned molding apparatus D has an elevating mandrel 19 whose bottom surface is the same size as the bottom wall 1, and which rises and returns to the top of the bottom wall 1 of the blank A carried into the molding apparatus D, and each protrusion as the mandrel 19 descends. A first guide 20 that raises the piece 4 upward; a second guide 21 that is located inside the first guide 20 and that raises the end walls 3, 3' upright after the projecting piece 4 is raised; The third guide 22 raises the side walls 2, 2'.

The mandrel 19 described above is adapted to be raised and lowered by a crank mechanism 39, but it may also be raised and lowered by contraction and expansion of a cylinder.

Further, below the molding device D, a belt conveyor 23' is provided for conveying the assembled box body a with the side walls 2 and 2' in between.

Further, the tail of the conveyor 24 is positioned below the molding device D, and the end wall 3 having the upright top wall 6 is attached to the locking claw 28 that allows the box body a to travel in advance. is provided.

Immediately above the conveyor 24, a presser conveyor 25 is provided which lowers the top wall 6 and prevents the top wall 6 from floating up.

In addition, since a downward slope is provided at the outgoing tail portion of the presser conveyor 25 by the tail side pulley 26 and a guide member 27 provided at a low position in front of this pulley 26, the belt of the pulley 26 portion and The top wall 6 begins to fall due to contact with the top wall 6, then the top wall 6 gradually falls due to the downward slope of the belt, and then as the contact position of the top wall 6 with respect to the guide member 27 is sequentially displaced. Top wall 6 to final position
It is starting to defeat the.

Also, on both sides of the conveyor 24, side walls 2, 2'
A coating device C' for applying adhesive to the surface of the coating device C', and a bending device F located in front of the coating device C' for bending the outer walls 7, 7' so as to circumscribe the side walls 2, 2' are provided. It is being

The above-mentioned bending device F consists of two rods 29, a large number of which are arranged side by side at a predetermined interval forward and backward from both rods 29, and rollers with a large interval at the end of the approach. Consisting of 30 and
First, the outer walls 7, 7' are bent by the rods 29, and then the outer walls 7, 7' are pressed against the side walls 2, 2' by the rollers 30.

In the illustrated case, the presser conveyor 25 has a large number of narrow belts arranged side by side to prevent the projecting piece 11 from falling over, but when the projecting piece 11 is not provided, a single wide belt is used. You can.

In addition, in order to prevent the end wall 3' from being damaged when the top wall 6 is bent, a presser conveyor 25 is provided.
The traveling speed of the conveyor 24 is made slightly faster than that of the conveyor 24,
The edges of the outer walls 7, 7' are flush with the surfaces of the end walls 3, 3'.

In front of the conveyor 24, there is a roller conveyor 31 for transferring the box A' (shown in FIG. 12) with the upper edge opening of the box body a closed by the lid a'.
A stopper 32 is provided for stopping the box A' on this roller conveyor 31.

Further, the box A' stopped on the roller conveyor 31 by the stopper 32 is discharged by a chain conveyor 34 having claws 33 so that the outer wall 7 is in the lead.

Furthermore, an end wall 3 is provided on one side of the chain conveyor 34.
An applicator C'' is provided for applying adhesive to.

Further, an end wall 3 is provided in front of the coating device C″.
a bending device G that bends the outer end wall 8 so as to circumscribe the outer end wall 8;
is provided.

The above-mentioned folding device G is provided with a guide member 35 on the other side of the chain conveyor 34 that causes the box A' to travel along a certain line by bringing the roller into contact with the end wall 3'.
A rod material 3 for bending is placed on one side of the chain conveyor 34.
6 and rollers 37 are provided.

Note that the coating devices C' and C'' are similar to the coating device C.

In the figure, reference numeral 38 denotes a holding plate, which allows each corner to be shaped at 90°.

The automatic box making machine according to this invention has the above-mentioned structure, and its operation will be explained next. The end wall 3 and outer end wall 8 of the blank A are transferred onto the guide rail 17 by a chain conveyor 13 having a stopper claw 14, and when the blank A is further fed, the side wall 2 and outer wall 7 are brought into contact with the stopper 18. Blank A stops at a fixed position.

At this time, the side walls 2, 2' of the blank A passing through
Adhesive is applied by application device C to.

Since the mandrel 19 is then lowered, the bottom surface of the mandrel 19 during the lowering comes into contact with the bottom wall 1, and the bottom wall 1 is pushed down.

Therefore, while the mandrel 19 continues to descend, the first guide 20 bends the square protrusion 4 upward, and then the second guide 21 bends both end walls 3, 3' upward. , then the third
The guides 22 bend the side walls 2, 2' upward.

At this time, the projecting pieces 4 are adhesively fixed to the inner surfaces of both ends of the side walls 2, 2' using an adhesive, and the box body a is assembled as shown in FIG.

The assembled box body a is transported to the mandrel 19 while being conveyed by the belt conveyor 23'.
The robot is allowed to escape from the vehicle and fall onto the conveyor 24.

In addition, the escaped mandrel 19 of the box body a
returns to the rising position.

Then, the box body a is sent out by the claw 28 that locks on the end wall 3, and during this sending out, adhesive is first applied to the surfaces of both side walls 2, 2' by the coating device C', and then the adhesive is applied to the surfaces of the side walls 2, 2' by the presser conveyor. 25 and the guide member 27 to form a box A' with the top opening of the box main body a closed as shown in FIG. The outer walls 7, 7' are bent downward so as to circumscribe the outer walls 7, 7', and the outer walls 7, 7' are fixed to the side walls 2, 2' using an adhesive.
4 onto the roller conveyor 31.

The box A' sent to the roller conveyor 31 is stopped by bringing the end wall 3' into contact with the stopper 32, and then the box A' is moved by the chain conveyor 34 having a claw 33 that contacts the outer wall 7'. At the same time, in the middle of this feeding, the adhesive is applied to the end wall 3 by the coating device C'', and then bent downward by the bending device G so as to circumscribe the outer end wall 8 on the end wall 3, The outer end wall 8 is adhesively fixed to the end wall 3 via adhesive, and the lid body is attached to the box body a.
The box A'' (as shown in FIG. 13) covered with a' and fixed with adhesive is discharged from the chain conveyor 34.

As described above, according to the automatic box making machine according to this invention, the blank is fed onto the guide rail having a stopper through the conveyance path, and the projecting piece, both end walls, and both side walls are sequentially formed by lowering the mandrel. The projecting pieces are glued and fixed to the side walls coated with adhesive using an applicator while lifting upwards to form the box body.Then, while the box body is running with the top wall in front, the projecting pieces are glued and fixed to the side walls coated with adhesive using a coating device. The top wall is brought down, adhesive is applied to both sides using a coating device, and while both outside walls are bent using a bending device, the outside walls are overlapped and fixed with adhesive on both sides, and finally the adhesive is applied to one end wall. The device applies adhesive, and the bending device bends the outer end wall, overlapping and fixing the outer end wall with the end wall, and the upper edge opening of the box body is closed with the lid, so no manual labor is required. It is possible to assemble a one-piece box that saves materials automatically without the need for it.

[Brief explanation of the drawing]

Figure 1 is a front view of the box making machine according to this invention, Figure 2
3 is a side view of the same, FIG. 4 is an enlarged vertical front view showing the molding device, FIG. 5 is a perspective view of the same, FIG. Figure 7 is an enlarged side view of the same as above, Figure 8 is a partially cutaway enlarged plan view of the part where the outer end wall is bent, Figure 9 is a rear view of the same as above, and Figures 10 to 13 are the blanks in the assembled state. FIG. A...Blank, a...Box body, a'...Lid body,
1... Bottom wall, 2, 2'... Side wall, 3, 3'... End wall, 4... Protruding piece, 5... Punching hole, 6... Top wall, 7, 7'... Outer wall, 8... Outer end wall, 9...
Through hole, 10...Slit, 11...Protrusion, 12...
... Notch, B ... Conveyance path, 13 ... Chain conveyor, 14 ... Latch claw, 15 ... Stopper, 16
... Suction cup, 17 ... Guide rail, 18 ... Stopper, C ... Coating device, D ... Molding device, 19
...Mandrel, 20...First guide, 21...
Second guide, 22... Third guide, 23'... Belt conveyor, 24... Conveyor, 25... Presser conveyor, 26... Pulley, 27... Guide member, 28... Locking claw, F... Bending device, C′...
Coating device, 29... Rod material, 30... Roller, 31
...Roller conveyor, 32...Stopper, 33
...Claw, 34...Chain conveyor, C''...Coating device, G...Bending device, 35...Guide member,
36...Rod material, 37...Roller.

Claims (1)

[Scope of utility model registration request] A bottom wall, a pair of side walls and end walls connected to both side edges and both end edges of the bottom wall, protrusions provided at both ends of both side walls or both end walls, and a top wall continuous from one end wall. , the feed conveyance path for the blank is provided so that the side wall and the outer wall on one side of the blank, which are constituted by a pair of outer walls and outer end walls connected to both side edges and the end edge of the top wall, are in front; In the middle of the conveyance path, a device for applying adhesive to both end walls, both side walls, or protrusions is provided, and furthermore, in front of the conveyance path, guide rails for boarding the end walls and outer end walls located on both sides, and guide rails at fixed positions are provided. a stopper for stopping the blank; a lifting mandrel that starts descending from just above the bottom wall of the blank stopped at the fixed position and pushes down the bottom wall; a guide and a second part that raises both end walls upwards.
A box body forming device consisting of a guide and a third guide that raises both side walls is provided, and a conveyor that runs the box body with the top wall standing up below the forming device in advance, and a top wall that is placed directly above the conveyor. A holding conveyor is provided to push down the wall, and a device for applying adhesive to both side walls and a folding device for stacking both outer walls on both sides of the conveyor are provided in the middle of the conveyor. A conveyor is provided in which the main body runs with one outer wall leading, and a coating device is provided in the middle of the conveyor for applying adhesive to the end wall or outer end wall that is not connected to the top wall, and the outer end wall is attached to the end wall. An automatic box making machine equipped with a folding device for stacking.